(a(i))[2]
Explain why there is a continuous spread of wavelengths.
(a(ii))[2]
Explain why there is a sharp cut-off at short wavelength.
(b(i))[2]
State what is meant by the hardness of an X-ray beam.
(b(ii))[2]
State how hardness is controlled.
(c(i))[1]
Suggest why, when producing an X-ray image, long-wavelength X-ray radiation poses a greater hazard to health than short-wavelength radiation.
(c(ii))[1]
Suggest how this hazard is minimised.